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Contest historian John Kennedy O'Connor points out, however, that Austria had given Spain two points in the previous event and since Spain only won by one point, the political protest was perhaps disingenuous.
Three artists returned to the 1973 contest, Finland's Marion Rung, who last represented the nation in 1962; 1971 entrant Massimo Ranieri from Italy; and Cliff Richard, who last performed Congratulations for the United Kingdom in 1968.
Joan Manuel Serrat was not allowed to sing La La La in Catalan for the Eurovision Song Contest 1968 and, unwilling to sing it in Spanish, was replaced by Massiel, who won the contest.
Cliff Richard had also previously represented the United Kingdom in 1968 with "Congratulations", which came second.